Intake-manifold attachment



March 11 1924. 1,486,760 F. A. JOHNSON ET AL y INTAKE MANIFOLDATTACHMENT Filed March 17 1923 Patented Wlan'. 11, i924.

FRANK A. 3GHNSON, QF AURORA, AINE) JOHN AHLGREN, OF BATAV'A, ILLIOIS.

INTAKE-MANIFOLD ATTACHMENT.

Application led March 17, 1923.

T o all whom t may concern.'

Be it known that we, FRANK A. JOHNSON and JOHN AHLenni-r, citizens ofthe United States, residing at (1) Aurora, (2) Batavia,

t in the county of Kane and State of lilinois, have invented certain newand useful Improvements in an intake-Manifold Attachment, of which thefollowing is a speciiication.

This invention relates to attachments for internal combustion enginesand the primary object of the invention is to provide a novel deviceadapted to be inserted in the intake manifold for insuring the correctbreaking up of the combustible mixture and the correct commingling ofthe constituents thereof, prior to the entrance of the mixture into theengine cylinders, thereby insure the correct operation of the engine.

Another object of the, invention is the provision of a body formed of aspirally wound wire disposed in the entrance conduit to the manifoldthrough which the gas and air from the carburetor is adapted 23 to besucked, the convolutions of the coil tending to spread further apart,according to the amount of suction of the engine pistons, the passage ofthe gas and air between the convolutions tending to break up the gas andair into small molecules and effectively commingle the gas and airtogether to form the correct combustible charge.

A further object of the invention is to provide novel means for mountingthe attachment within the manifold, so as to permit the holding thereofin correct position without displacement.

Vith these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts as will behereinafter more specifically described, claimed and illustrated in theaccompanying drawings, forming a part of this specification, in whichdrawings:

Figure 1 is a longitudinal section through a portion of an intakemanifold showing the improved attachment incorporated therewith, partsof the attachment being shown in section.

Figure 2 is a detail transverse section taken through the attachment onthe line 2-2 of Figure 1 looking in the direction of the arrow.

Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the serial no.625,806.

several views, the letter A generally indicates an intake manifold, Bthe upper end of a carburetor connected therewith and C the improvedcharge refining attachment.

The manifold A can be of any preferred type or construction and includesthe depending body portion 5 and the upper outwardly extending arms 6which lead to the intake ports of the cylinders. The lower end of thebody portion 5 of the intake manifold A is provided with an outwardlyextending annular flange 7 which is adapted to normally abut theoutwardly extending annular iiange 8, formed on the upper outlet end ofa carburetor. The carburetor indicated by the reference character B canbe of any preferred type or character.

The improved attachment C comprises a body 10 formed of wire woundspirally to provide a plurality of convolutions 11, all of which are ofsubstantially the same diameter. These convolutions 11 normally fitrelatively close to one another, and owing to the inherent resiliency ofthe material from which the body is formed, the coils will automaticallyspread, when a suction is formed in the intake manifold 6 by theoperation of the pistons of the engine. It is preferred to have the wirefrom which the body 10 is formed of a substantial semicylindrical shapein cross section, so as to provide a flat outer face 12 and asemicylindrical inner face 13. This construction provides sharp edgeswhich are adapted to be disposed in intimate relation, which forms meansfor atomizing or breaking up the gas and air into minute molecules andfor permitting the thorough commingling thereof. It is obvious that thespace between each pair of convolutions 11 will act as a nozzle forpermitting the iiow of the charge from the attachment.

In order to hold the body 10 in correct axial relation to the bodyportion 5 of the manifold A, the lowermost coils or convoluti ons of thebody are spread out or unwound as at 14 so as to assume a conical shapeand are disposed between a pair of frusto-conical anges 15 and 16 formedon the annular'clamping plates 17 and 18. A suitable packing gasket 19is disposed between the plates 17 and 18, and the plates 17 and 18 andthe gasket 19 are placed between the abutting flanges 7 and 8 of thebody portion 5 and carburetor B. Suitable bolts or the like 20 areutilized for katje@ holding the flanges 7 and 8 together and to .bringthe plates 17 and 18 toward one anvvolutions 14 and thus hold theattachment C in correct position.

An inverted conical-shaped cap 25 formed of metal is provided for theupper end of the body 1G, and this conical-shaped body can be providedwith an attaching; [lange 26 which can be secured in any preferredmanner to the uppermost convolutions 11. This inverted conical-shaped.body 25 can be provided w'th minut-e slots 2T through which the chargeis also adapted to escape.

The attachment is adapted to absorb some heat from the eng-ine and thusthe charge passes through the convolutions thereof, the same will becomeheated to a certain extent which will tcnd to vaporizc the charge.

From the foregoing` description, it can be seen that an eXce itionallysimple and durable attachment has been provided tor interna-l combustionengines, which will insure the correct comniingling ot the `as and airprior lto the entrance 'thereol to the cylinders of the engine and thebreaking?y up of the charge into minute particles.

Changes in details may be made without departing from the spirit or thescope of this invention.

"What we claim as new is 1. In combination, a carburetor, a manifold, acharge refining attachment disposed between the carburetor and intakemanifold including a coiled body having` the convolutions thereof of thesame diameter disposed in relative close proximity to one another, andan inverted conical-shaped cap secured to the outermost convolution ol'the body provided with a plurality of minute outlet slots.

2. ln an inter al combustion engine, the combination, an intakemanifold, a carburetor, an attachment for the engine clamed between thecarburetor and intake manifold includingY a body 'formed from a coiledwire disposed in axial relation to the outlet port of the manifold, theconvolutions being disposed in close proximity to one another and of thesame diameter, an inverted conicali/iee veo shaped cap carried by theoutermost convolution, a base fiange Jformed on the cap engaging theoutermost convolution, the cap having' a plurality of minute outletslots formed therein.

3. in an internal nombustion engine, the combination with an intakemanifold, a carburetor and a charge relining attachment `for the enginedisposed in the intake manifold including,V a body formed from a coiledwire, the convolutions of the body being of the same diameter anddisposed in close proximity to one another. a cap carried by the upperend oit' the body, and a pair of clamping` members disposed between themanifold and carburetor tor engaging and holding the lower end of thebody therebetween to prevent accidental displacement thereof.

el. ln an internal combustion engine, the combination, an intakemanifold, a carburetor, a charge relining attachment for the internalcombustion engine including a body formed from a coiled wire having thecon volutions thereof of the same diameter and dispos-ed in closeproximity to one another, an inverted conical-shaped cap carried by thebody, a pair of clamping` plates disposed between the manifold and thecarburetor, truste-conical shaped flanges formed on the inner edge ofsaid clamping plates tor receiving the inner end of the coiled body.

5. As a new article of manufacture, a charge refiningr device for aninternal coinbustion engine comprising a spirally wound body oi.isubstantially the same diameter throughout its entire length, a capcarried by the outer end of the body, a pair ot clamping plates,compression gaskets disposed between the plates, means for bringing;`the plates toward each other, and :truetoconical shaped flanges formedon the inner edges olz the plates ttor receiving the inner end ot saidcoiled body.

ln testimony whereof we affix our signatures in presence of twowitnesses.

FRANK A. JOHNSUN. JOHN AHLGBEN. Vilitnesses:

VERNON L. CARR, 'r'ro l-lonn.

